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Old 12-31-2007, 06:18 PM   #4
70' GMC
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Join Date: Oct 2006
Location: Birmingham AL
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Re: How do I make the truck loud???

Quote:
Originally Posted by chevy72blu View Post
Flowtech makes some pretty decent manual cutouts that you weld in the exhaust system. You can bolt on or remove little blocker plates that allow the exhaust to exit right behind the muffler. Its quite a bit quieter than open headers, but still obnoxiously loud. I used to use a nut as a spacer with the plates which gave it a really throaty growl while keeping it a little quieter. Just a warning though, its pretty tough to keep them from leaking when they are corked.

I think I payed about 30 bucks each for mine
just take everything off and leave the headers open no pipes???
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Was: 1970 with a 350 4barrel and 288 horses

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Last edited by 70' GMC; 12-31-2007 at 06:18 PM.
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